gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index df91a8dd4bab0c55b6f3f817be1c8846270d1c0c..4d52978918190ad1e75332356f61c3e086e72b68 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1133,7 +1133,9 @@ bool RenderThreadImpl::CreateViewCommandBuffer(
 }
 
 void RenderThreadImpl::CreateImage(
-    gfx::PluginWindowHandle window,
+    const gfx::GpuMemoryBufferHandle& handle,
+    const gfx::Size& size,
+    unsigned internalformat,
     int32 image_id,
     const CreateImageCallback& callback) {
   NOTREACHED();